API Versioning Strategy

Write an API versioning strategy document for a service or API platform. Use when asked to define versioning policy, plan API deprecation, classify breaking changes, or document version lifecycle. Produces a complete versioning strategy with breaking-change classification table, deprecation timeline, migration guide template, and client communication template.

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Install

npx pm-claude-skills add --agent claude   # or codex · cursor · gemini · hermes
# or one-line MCP (every skill, any client):
claude mcp add pm-skills -- npx -y pm-claude-skills-mcp

What to give it

API type — REST, GraphQL, or gRPC (each has different versioning mechanics)
Current versioning approach — URL path (`/v1/`), request header, query parameter, or none; if none, document starts fresh
Number of existing versions and active consumer count — needed to size the lifecycle policy and migration scope
Deprecation timeline constraints — any hard deadlines (contract SLAs, compliance windows, annual release cycles)
Consumer type — internal teams only, external partners, public API, or mix (affects communication channel choices)

Related skills

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